Machine foe



UNITED STATES PATENT UFFICE.

M. H. COLLINS, OF CHELSEA, MASSACHUSETTS.

MACHINE FOR BOLTING FLOUR, &c.

Specication of Letters Patent No. 25,884., dated October 25, 1859;

'To all whom it may concern:

Be it known that I, MICHAEL HENRY CoL- LINs, of Chelsea, in the county of Sufolk and State of Massachusetts, have invented a new and useful Machine for Bolting Flour, Meal, or otherl Substances Requiring a Simivlarl operation; and I do hereby declare that sectional plan view. Fig. 4, a vertical transverse section ofthe bolting apparatus. Fig. 5, a transverse section of the upper part of the same, through the middle. Fig. 6, a longitudinal section through the bolting frame and rubbers. Fig. 7 a transverse section of the same. Fig. 8, a plan view of the 'bolting frame with rubber inside. Fig. 9,

a plan view of sieve. Fig. IO, side view of the same. Fig. 11, longitudinal section of the rubber. Fig. 12, a plan view of the same. Fig. 13, a section of wind-fender, and Fig. 14, a plan view of the same.

Similar letters of` reference, in each of the several figures, indicate corresponding parts.

The nature of my invention consists, 1st, in a curved frame, in which are placed one or more bolting sieves, the frame being open at each end for the discharge of bran or other coarse material; 2nd, in the combination with the frame and sieves of a corrugated rubber, the frame and sieves having a c vibrating motion in the path of a circle,

whilef the rubber remains stationary; 3rd, the arrangement of sieves of different sized meshes and having the same vibrating motion, in the curved vibrating frame, and in the relation shown to a fan wheel which causes a draft at the back of the machine, as herein set forth; 4th, in the manner of arranging and combining the curved frame and its attachments, with the fan so as to give the said frame and its attachments a vibrating motion, in the path of a circle and drive the fan wheel by the same crank shaft, as hereinafter set forth.

To enable others, skilled in the art, to make and use my invention, I will proceed to describe its construction and operation.

In Figs. l, 2, and 3, A represents the outer frame of the machine. A2, is the hopper for receiving the material to be bolted. B, is the slide at the bottom of the hopper for the purpose of regulating the quantity let on to the bolt in a given time. This opening in the bottom of the hopper is immediately over the center of the frame containing the bolting sieves, and between the rubbers. This frame is represented in plan and section in Figs. 5, 6, 7 and 8.

g, is a coarse screen or sieve; d', is a fine sieve; p, p, are rods to prevent the fine sieve or bolting cloth from sagging. C, C, in Figs. 2 and 3, are blades ofthe fan wheel; D, is a round opening in the partition, next the vfan wheel; this opening leads into a chamber' c, communicating with ilues E, E.

F, F, are openings through partitions H, I-I, for the passage of the air from the inclined planes Gr, G.

z', z', y', y', are sieves of different sized meshes. L, is a wind guard, shown in red lines, also, shown separately in Fig. 18'. This is movable and can be drawn out so as to enlarge or diminish the air passage M.

J, is an aperture for what falls through the sieves z', andj, on plane I, to pass vthrough to the receivingboX K.

N, is a slide or damper, of sheet iron, slid ing down from the topi of the machine by which the opening D, can be partially or entirely closed.

P, is an aperture in partition O, in the form of an inverted arch.

e, is a metallic inclined conductor, the lower end of which passes through the invertedv arch; upon this conductor the fine flour falls from thel boltand from thence into the receivers.

K, Q, R, S, and T, are receivers for different qualities of flour, bran Sac.

U, isf a crank by which the machine is operated; V, is a spur wheel on the shaft towhi'ch the crankA U,.is` attached and meshing into 'a small pinion wheel W2, on shaft W.

X, is a crank on shaft W.

Y, is a pitman attached tocrank X, at one end and to the bolting frame at the other, by means of which the circular vibrating motion is obtained for the bolting frame. K, K, are the centers upon which the whole bolting frame Works, resting on journals on the frame A Within which itis placed; s, s,

are pins by which the curved bolting frame, as shown in F ig. 8, is held in its proper place.

z', is a driving wheel. on one end of shaft W.

z2, is a small wheel on the shaft of the fan wheel, and driven by a band from z; L, and g, are grooves for sieves and windfeeders; r, 7', are the openings to the passages communicating with open ends vof the bolting frame, by which such coarse materials as will not pass throughV the sieve with the lar est meshes are carried to the receivers R, y, is an opening to passage for conveying the bran to receiver T, when only one sieve is used in the bolting frame.

In Fig. 6, is shown a section of the rubbers within the movable frame containing the sieve or sieves; they are made of wood or other Y suitable material; V25, represents the under surface between which and the upper rough surface of the coarser sieve the material to be bolted passes, and by the vibrating motion of the sieves under the ermanent rubbers, is spread over the sur ace of the sieve and at the same time the flour is rubbed loose from the bran and a more perfect separation effected. The form of these surfaces may be varied, if thought desirable. Y

V in Fig. 8, where the rubbers are represented as within the bolting frame, are the hinges upon which they are hung, thus allowing an upward motion, at right-angles to the plane of the sieves, of the lower end of the rubbers to accommodate them to whatever sized materials may pass between them and the sieve; w, w, are irons attached to the frame of the rubbers, the outer ends resting in the holes in the permanent frame A.

In the operation of this machine, it will be seen that the meal whether from wheat or other grain, is first placed in the hopper and from thence falls upon the bolting sieves and by their vibrating motion in the path of a circle is spread from the center towardeach end, the fine flour falling through and depositing in the proper receiver, while the bran passes out at the upper ends of the bolting frame, falling down upon other sieves where it is again separated and the -different qualities deposited in their proper receptacle. In this operation, the rubbers may or may not, be used. In clearing and separating grain from smaller seed and other matter, the loose frame with the fine bolting sieve must be substituted by another with sieves of suitable meshes. In the passage of the grain, between the rubbers and the rough surface of the sieve by the vibrating motion of the sieve, it is freed from all foreign substances, the lsmall seeds falling through the sieve. and the grain passing out at the open ends, and falling down upon sieves of the larger meshes, where another separation is made, if desired. In its descent to the lower sieves, it passes through an upward current of air, produced by the action of the fan wheel, which frees it from all dust, chaff, or other light substances, which are carried out at the back of the machine and the grain, freed from all foreign matter, deposited in the receptacle prepared for it. The thickness of thisV air current may be varied by adjusting the wind fender so as t0 increase or diminish the air passage, and its force may be varied by covering a larger or smaller portion of the round aperture ink the partition next the fan wheel, or, it may be stopped entirely by closing the whole of that aperture. Y

By substituting sieves adapted to the purpose, this machine may be used, without further change for separating sand or metallic ores.

Vhat I claim as my invention and desire to secure by Letters Patent, is-

l. A curved frame in which are placed one or more bolting sieves cl, g, this frame being l, A

open at each end for the discharge of bran or other coarse material, substantially as and for the purposes set forth.

2. The combination with the curved frame and sieves of a corrugated rubber t, they frame and sieves having a vibrating motion in the path of a circle while the rubber remains stationary, substantially as and'for the purposes set forth.

3. The arrangement of sieves of dierent sized, meshes and having the same vibrating motion, on the circular vibrating frame and in the relation shown to a fan wheel which causes a draft at the back of the machine, substantially as and for the purposes set forth.

M. H. CoLLrNs.

Witnesses:

J. C. LovEJoY, ARTHUR W. AUSTIN. 

